Commit graph

21012 commits

Author SHA1 Message Date
Peter Ujfalusi
2995a10002 ARM: dts: omap4: Add McBSP entries
Create the sections describing the McBSP ports to be able to use them via
DT.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:22:53 +02:00
Peter Ujfalusi
0be484bf4d ARM: dts: omap3: Add McBSP entries
Create the needed sections to be able to probe McBSP ports via DT.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:22:51 +02:00
Peter Ujfalusi
40c9e5cacf ARM: dts: omap2420-h4: Include omap2420.dtsi file instead the common omap2
Since the board is based on OMAP2420 we should include the dedicated dtsi
file (which includes the common omap2 dtsi).

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:22:49 +02:00
Peter Ujfalusi
3f187f8294 ARM: dts: omap2: Add McBSP entries for OMAP2420 and OMAP2430 SoC
The McBSP IP within OMAP2420 and 2430 is different we need to create separate
dtsi files for them.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:22:47 +02:00
Benoit Cousson
1c1737e563 ARM: dts: omap3-beagle: Add heartbeat and mmc LEDs support
Add the support for D6 and D7 LEDs on Beagle board.
- D6 will be used for heartbeat
- D7 will be used for mmc0

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:22:46 +02:00
Florian Vaussard
a60be2fe97 ARM: dts: omap3: Add gpio-twl4030 properties for BeagleBoard and omap3-EVM
Add device tree properties for twl4030/gpio, according to the
platform data of corresponding boards. This enables the led
connected to LEDB output for both boards, as well as
pullups/pulldowns on GPIO for the BeagleBoard.

Signed-off-by: Florian Vaussard <florian.vaussard@epfl.ch>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Vaibhav Hiremath <hvaibhav@ti.com>
2012-09-07 19:22:44 +02:00
Benoit Cousson
5635121edb ARM: dts: OMAP4: Cleanup and move GIC outside of the OCP
Remove some useless comment and move GIC controller outside
of the OCP node since it does use the MPU internal bus and
not the OCP.
This will not change the functionality but will reflect the
reality more accurately.

Signed-off-by: Benoit Cousson <b-cousson@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
2012-09-07 19:18:44 +02:00
Santosh Shilimkar
eed0de2772 ARM: OMAP4: Add local timer support for Device Tree
Add cortex-a9 local timer support for all OMAP4 based
SOCs using DT.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:18:43 +02:00
Santosh Shilimkar
926fd45ba9 ARM: OMAP4: Add L2 Cache Controller in Device Tree
Provide PL310 Level 2 Cache Controller Device Tree
support for OMAP4 based devices.

Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:18:41 +02:00
Aneesh V
11c27069cf ARM: dts: EMIF and LPDDR2 device tree data for OMAP4 boards
Device tree data for the EMIF sdram controllers in OMAP4
and LPDDR2 memory devices attached to OMAP4 boards.

Reviewed-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Lokesh Vutla <lokeshvutla@ti.com>
Signed-off-by: Aneesh V <aneesh@ti.com>
[santosh.shilimkar@ti.com: Rebased against 3.6-rc]
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
[b-cousson@ti.com: Use label in board to access EMIF nodes]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:18:40 +02:00
Sourav Poddar
61bc35445b ARM: dts: omap4-sdp: Add keypad data
Add keypad data node in omap4 device tree file.
Also fill the device tree binding parameters
with the required value in "omap4-sdp" dts file.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Rob Herring <rob.herring@calxeda.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
[b-cousson@ti.com: Re-align the entries and the comments]
2012-09-07 19:18:33 +02:00
Sourav Poddar
2887101513 ARM: dts: omap5-evm: Add bmp085 sensor support
Add bmp085 pressure sensor data in omap5 evm dts file.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:18:32 +02:00
Sourav Poddar
5449fbc27b ARM: dts: omap5-evm: Add keypad data
Add keypad data node in omap5 device tree file.
Also fill the device tree binding parameters
with the required value in "omap5-evm" dts file.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
[b-cousson@ti.com: Fix merge issue with MMC patches,
put node at the proper place, align entries and comments]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:18:30 +02:00
Sourav Poddar
08f3e21b81 ARM: dts: omap5-evm: Add tmp102 sensor support
Add tmp102 temperature sensor data in omap5 evm dts file.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:18:28 +02:00
Sourav Poddar
6e6a9a5047 ARM: dts: omap5-evm: Add I2C support
Add I2C data nodes in omap5 device tree file.

Signed-off-by: Sourav Poddar <sourav.poddar@ti.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:18:21 +02:00
Vaibhav Hiremath
b82b04e8eb ARM: OMAP: omap_device: Do not overwrite resources allocated by OF layer
With the new devices (like, AM33XX and OMAP5) we now only support
DT boot mode of operation and now it is the time to start killing
slowly the dependency on hwmod, so with this patch, we are starting
with device resources.
The idea here is implemented considering to both boot modes -
  - DT boot mode
    OF framework will construct the resource structure (currently
    does for MEM & IRQ resource) and we should respect/use these
    resources, killing hwmod dependency.
    If pdev->num_resources > 0, we assume that MEM & IRQ resources
    have been allocated by OF layer already (through DTB).

    Once DMA resource is available from OF layer, we should
    kill filling any resources from hwmod.

  - Non-DT boot mode
    Here, pdev->num_resources = 0, and we should get all the
    resources from hwmod (following existing steps)

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: Paul Walmsley <paul@pwsan.com>
Cc: Kevin Hilman <khilman@ti.com>
[b-cousson@ti.com: Fix some checkpatch CHECK issues]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-07 19:17:40 +02:00
Peter Ujfalusi
3956a1a0d1 ARM: OMAP: omap_device: Fix up resource names when booted with devicetree
When booted with some resource will have their name set to NULL. This can
cause later kernel crash since this is not expected by the platform code.

When we boot without DT the devices are created with platform_device_add()
which itself fixes up the missing resource names:
if (r->name == NULL)
	r->name = dev_name(&pdev->dev);

The of core also fixes up the resource names when taking the information
from DT data - in __of_address_to_resource():
r->name = name ? name : dev->full_name;

When we boot OMAP with devicetree: of will create the devices based on the
DT data so the resource names are guarantied to be not NULL. Since we have
the 'ti,hwmod' tag, we remove the of created resources from the device and
re-create them based on hwmod data. If the hwmod data does not specify a
name for a resource it will be NULL.
This can cause kernel crash if the driver uses
platform_get_resource_byname() to get any resource.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
[b-cousson@ti.com: Change omap_hwmod to omap_device in subject]
Signed-off-by: Benoit Cousson <b-cousson@ti.com>
2012-09-06 14:21:16 +02:00
AnilKumar Ch
a06ceff6f2 arm/dts: Add tps65217 regulator DT data to am335x-bone.dts
Add tps65217 regulator device tree data to AM335x-Bone by adding
regulator consumers with tightened constraints and regulator-name.
TPS65217 regulator handle can be obtained by using this regulator
name.

This patch also add I2C node with I2C frequency and tps65217 PMIC
I2C slave address.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 18:09:48 -07:00
AnilKumar Ch
1b2a9702b0 arm/dts: Add tps65910 regulator DT data to am335x-evm.dts
Add tps65910 regulator device tree data to AM335x-EVM by adding
regulator consumers with tightened constraints and regulator-name.
TPS65910 regulator handle can be obtained by using this regulator
name.

This patch also add I2C node with I2C frequency and tps65910 PMIC
I2C slave address.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 13:59:41 -07:00
AnilKumar Ch
54a37bae24 arm/dts: regulator: Add tps65217 device tree data
Add device tree data for tps65217 regulator by adding all tps65217
regulator nodes. Regulator is initialized based on compatiable
name provided in tps65217 DT file.

All tps65910 PMIC regulator device tree nodes are placed in a
seperate device tree include file (tps65217.dtsi). This patch
was tested on AM335x-Bone.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 13:59:17 -07:00
AnilKumar Ch
d5d08e2e16 arm/dts: regulator: Add tps65910 device tree data
Add device tree data for tps65910 regulator by adding all tps65910
regulator nodes. Regulator is initialized based on compatiable
name provided in tps65910 DT file.

All tps65910 PMIC regulator device tree nodes are placed in a
seperate device tree include file (tps65910.dtsi). This patch
was tested on AM335x-EVM.

Signed-off-by: AnilKumar Ch <anilkumar@ti.com>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 13:57:53 -07:00
Tony Lindgren
39b1bb2e0c Merge branch 'devel-dt-regulator' into devel-dt 2012-08-30 13:47:23 -07:00
Rajendra Nayak
624411ceba arm/dts: Cleanup regulator naming and remove @0,1
regulators do not have a 'reg' property, hence the regulator@0,
regulator@1 do not make sense. get rid of it.

Reported-by: David Brown <davidb@codeaurora.org>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-30 13:47:04 -07:00
Olof Johansson
85d7ff9b90 ARM: omap: add dtb targets
Makes it easier to just do 'make dtbs' for whatever the kernel was
configured for, just like some other platforms.

Signed-off-by: Olof Johansson <olof@lixom.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-24 13:17:55 -07:00
Vaibhav Hiremath
53d91034cf arm/dts: AM33XX: Set the default status of module to "disabled" state
Ideally in common SoC dtsi file should set all modules
to "disabled" state and it should get enabled in respective
EVM/Board dts file as per usage.

This patch sets default status of all modules to "disabled"
state in am33xx.dtsi file. Currently there are no modules
supported as part of Bone and EVM dts support, so care
to add entry "status = "okay"" while adding support for any
module.

Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Cc: Benoit Cousson <b-cousson@ti.com>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-24 13:06:56 -07:00
Balaji T K
5dd18b0150 arm/dts: omap5: Add mmc controller nodes and board data
Add OMAP MMC related device tree data for OMAP5.

Signed-off-by: Balaji T K <balajitk@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Tony Lindgren <tony@atomide.com>
2012-08-24 13:01:26 -07:00
Linus Torvalds
6dab7ede93 Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM fixes from Russell King:
 "The largest thing in this set of changes is bringing back some of the
  ARMv3 code to fix a compile problem noticed on RiscPC, which we still
  support, even though we only support ARMv4 there.

  (The reason is that the system bus doesn't support ARMv4 half-word
  accesses, so we need the ARMv3 library code for this platform.)

  The rest are all quite minor fixes."

* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
  ARM: 7490/1: Drop duplicate select for GENERIC_IRQ_PROBE
  ARM: Bring back ARMv3 IO and user access code
  ARM: 7489/1: errata: fix workaround for erratum #720789 on UP systems
  ARM: 7488/1: mm: use 5 bits for swapfile type encoding
  ARM: 7487/1: mm: avoid setting nG bit for user mappings that aren't present
  ARM: 7486/1: sched_clock: update epoch_cyc on resume
  ARM: 7484/1: Don't enable GENERIC_LOCKBREAK with ticket spinlocks
  ARM: 7483/1: vfp: only advertise VFPv4 in hwcaps if CONFIG_VFPv3 is enabled
  ARM: 7482/1: topology: fix section mismatch warning for init_cpu_topology
2012-08-18 16:20:05 -07:00
Stephen Boyd
89868730a7 ARM: 7490/1: Drop duplicate select for GENERIC_IRQ_PROBE
Seems that Thomas' and my patches collided during the last merge
window.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-15 10:46:51 +01:00
Russell King
080fc66fb5 ARM: Bring back ARMv3 IO and user access code
This partially reverts 357c9c1f07
(ARM: Remove support for ARMv3 ARM610 and ARM710 CPUs).

Although we only support StrongARM on the RiscPC, we need to keep the
ARMv3 user access code for this platform because the bus does not
understand half-word load/stores.

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-13 11:44:13 +01:00
Linus Torvalds
21d2f8dc91 gpio fixes for v3.6-rc1
- Fix a resource leak in the SCH driver
 - Fix the register address calculation in the MSIC driver
 - Fix the PXA driver's devicetree functions
 - Delete redundant shadow variable leftovers in the MXC driver
 - Specify the GPIO base for the device tree probe in the MXC driver
 - Add a modalias for the i.MX driver
 - Fix off-by-one bug in the Samsung driver
 - Fix erroneous errorpath in the Langwell driver
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Merge tag 'gpio-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio

Pull gpio fixes from Linus Walleij:
 - Fix a resource leak in the SCH driver
 - Fix the register address calculation in the MSIC driver
 - Fix the PXA driver's devicetree functions
 - Delete redundant shadow variable leftovers in the MXC driver
 - Specify the GPIO base for the device tree probe in the MXC driver
 - Add a modalias for the i.MX driver
 - Fix off-by-one bug in the Samsung driver
 - Fix erroneous errorpath in the Langwell driver

* tag 'gpio-fixes-v3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
  drivers/gpio/gpio-langwell.c: fix error return code
  gpio: samsung: Fix off-by-one bug in gpio addresses
  ARM: dts: imx: add alias for gpio
  gpio/mxc: specify gpio base for device tree probe
  gpio/mxc: remove redundant shadow variables initialization
  GPIO: gpio-pxa: fix devicetree functions
  gpio: msic: Fix calculating register address in msic_gpio_to_oreg()
  gpio-sch: Fix leak of resource
2012-08-12 21:45:33 +03:00
Linus Torvalds
88de3d0d71 arm-soc: bug fixes for v3.6-rc2
These are a bunch of bug fixes that came in after the merge window and
 one update for the MAINTAINERS file. The largest part of the fixes
 are patches that address bugs found by building all the ARM defconfig
 files. There are a lot more warnings that we have patches for, but
 the others are either still under discussion or are harmless and
 do not cause actual problems besides making the build slightly noisy.
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Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull arm-soc bug fixes from Arnd Bergmann:
 "These are a bunch of bug fixes that came in after the merge window and
  one update for the MAINTAINERS file.

  The largest part of the fixes are patches that address bugs found by
  building all the ARM defconfig files.  There are a lot more warnings
  that we have patches for, but the others are either still under
  discussion or are harmless and do not cause actual problems besides
  making the build slightly noisy."

* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (30 commits)
  ARM: davinci: remove broken ntosd2_init_i2c
  ARM: s3c24xx: enable CONFIG_BUG for tct_hammer
  omap-rng: fix use of SIMPLE_DEV_PM_OPS
  spi/s3c64xx: improve error handling
  mtd/omap2: fix dmaengine_slave_config error handling
  gpio: em: do not discard em_gio_irq_domain_cleanup
  ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
  ARM: imx: gpmi-nand depends on mxs-dma
  ARM: integrator: include <linux/export.h>
  ARM: s3c24xx: use new PWM driver
  ARM: sa1100: include linux/io.h in hackkit leds code
  Input: eeti_ts: pass gpio value instead of IRQ
  ARM: pxa: remove irq_to_gpio from ezx-pcap driver
  ARM: tegra: more regulator fixes for Harmony
  usb/ohci-omap: remove unused variable
  mfd/asic3: fix asic3_mfd_probe return value
  ARM: kirkwood: fix typo in Makefile.boot
  i.MX27: Fix emma-prp and csi clocks.
  ARM: integrator: use clk_prepare_enable() for timer
  MAINTAINERS: update entry for Linus Walleij
  ...
2012-08-12 21:31:44 +03:00
Will Deacon
730a8128cd ARM: 7489/1: errata: fix workaround for erratum #720789 on UP systems
Commit 5a783cbc48 ("ARM: 7478/1: errata: extend workaround for erratum
 #720789") added workarounds for erratum #720789 to the range TLB
invalidation functions with the observation that the erratum only
affects SMP platforms. However, when running an SMP_ON_UP kernel on a
uniprocessor platform we must take care to preserve the ASID as the
workaround is not required.

This patch ensures that we don't set the ASID to 0 when flushing the TLB
on such a system, preserving the original behaviour with the workaround
disabled.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-11 09:16:00 +01:00
Will Deacon
f5f2025ef3 ARM: 7488/1: mm: use 5 bits for swapfile type encoding
Page migration encodes the pfn in the offset field of a swp_entry_t.
For LPAE, we support physical addresses of up to 36 bits (due to
sparsemem limitations with the size of page flags), requiring 24 bits
to represent a pfn. A further 3 bits are used to encode a swp_entry into
a pte, leaving 5 bits for the type field. Furthermore, the core code
defines MAX_SWAPFILES_SHIFT as 5, so the additional type bit does not
get used.

This patch reduces the width of the type field to 5 bits, allowing us
to create up to 31 swapfiles of 64GB each.

Cc: <stable@vger.kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-11 09:15:59 +01:00
Will Deacon
47f1204329 ARM: 7487/1: mm: avoid setting nG bit for user mappings that aren't present
Swap entries are encoding in ptes such that !pte_present(pte) and
pte_file(pte). The remaining bits of the descriptor are used to identify
the swapfile and offset within it to the swap entry.

When writing such a pte for a user virtual address, set_pte_at
unconditionally sets the nG bit, which (in the case of LPAE) will
corrupt the swapfile offset and lead to a BUG:

[  140.494067] swap_free: Unused swap offset entry 000763b4
[  140.509989] BUG: Bad page map in process rs:main Q:Reg  pte:0ec76800 pmd:8f92e003

This patch fixes the problem by only setting the nG bit for user
mappings that are actually present.

Cc: <stable@vger.kernel.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-11 09:15:59 +01:00
Colin Cross
237ec6f2e5 ARM: 7486/1: sched_clock: update epoch_cyc on resume
Many clocks that are used to provide sched_clock will reset during
suspend.  If read_sched_clock returns 0 after suspend, sched_clock will
appear to jump forward.  This patch resets cd.epoch_cyc to the current
value of read_sched_clock during resume, which causes sched_clock() just
after suspend to return the same value as sched_clock() just before
suspend.

In addition, during the window where epoch_ns has been updated before
suspend, but epoch_cyc has not been updated after suspend, it is unknown
whether the clock has reset or not, and sched_clock() could return a
bogus value.  Add a suspended flag, and return the pre-suspend epoch_ns
value during this period.

The new behavior is triggered by calling setup_sched_clock_needs_suspend
instead of setup_sched_clock.

Signed-off-by: Colin Cross <ccross@android.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-11 09:15:58 +01:00
Stephen Boyd
f1898f6be9 ARM: 7484/1: Don't enable GENERIC_LOCKBREAK with ticket spinlocks
Now that ARM has implemented its spinlocks with tickets we don't
need to use the generic lockbreak algorithm. Remove the Kconfig
from ARM so that we use the arch_spin_is_contended() definition
from the asm header. This also saves a word in each lock because
we don't need the break_lock member anymore.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-11 09:15:58 +01:00
Will Deacon
3d9fb0038a ARM: 7483/1: vfp: only advertise VFPv4 in hwcaps if CONFIG_VFPv3 is enabled
VFPv4 support depends on the VFPv3 context save/restore code, so only
advertise support in the hwcaps if the kernel can actually handle it.

Cc: <stable@vger.kernel.org> # 3.1+
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-11 09:15:57 +01:00
Venkatraman Sathiyamoorthy
f7e416eb92 ARM: 7482/1: topology: fix section mismatch warning for init_cpu_topology
Get rid of this warning..
arch/arm/kernel/built-in.o(.text+0xac78): Section mismatch in reference
from the function init_cpu_topology() to the function
 .init.text:parse_dt_topology()
The function init_cpu_topology() references
the function __init parse_dt_topology().
This is often because init_cpu_topology lacks a __init
annotation or the annotation of parse_dt_topology is wrong.

Signed-off-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-08-11 09:15:56 +01:00
Arnd Bergmann
de9234306b ARM: davinci: remove broken ntosd2_init_i2c
ntosd2_init_i2c walks the ntosd2_i2c_info array, which it expects to
be populated with at least one member. gcc correctly warns about
the out-of-bounds access here.

Since this can not possibly work, it's better to disable i2c
support entirely on this board.

Without this patch, building davinci_all_defconfig results in:

arch/arm/mach-davinci/board-neuros-osd2.c: In function 'davinci_ntosd2_init':
arch/arm/mach-davinci/board-neuros-osd2.c:187:20: warning: array subscript is above array bounds [-Warray-bounds]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Sekhar Nori <nsekhar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Andrey Porodko <panda@chelcom.ru>
2012-08-10 13:14:36 +02:00
Arnd Bergmann
15b5eb2d91 ARM: s3c24xx: enable CONFIG_BUG for tct_hammer
Disabling CONFIG_BUG creates an insane amount of build warnings, which
makes it useless to check for building defconfigs to see if new
warnings show up.

Without this patch, building tct_hammer_defconfig results in:

net/packet/af_packet.c: In function 'tpacket_rcv':
net/packet/af_packet.c:1889:30: warning: 'hdrlen' may be used uninitialized in this function [-Wuninitialized]
net/core/ethtool.c: In function 'ethtool_get_feature_mask':
net/core/ethtool.c:213:1: warning: control reaches end of non-void function [-Wreturn-type]
block/cfq-iosched.c: In function 'cfq_async_queue_prio':
block/cfq-iosched.c:2914:1: warning: control reaches end of non-void function [-Wreturn-type]
mm/bootmem.c: In function 'mark_bootmem':
mm/bootmem.c:352:1: warning: control reaches end of non-void function [-Wreturn-type]
net/core/dev.c: In function 'skb_warn_bad_offload':
net/core/dev.c:1904:33: warning: unused variable 'null_features' [-Wunused-variable]
drivers/mtd/chips/cfi_probe.c: In function 'cfi_chip_setup':
include/linux/mtd/cfi.h:489:3: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized]
include/linux/mtd/map.h:394:11: note: 'r.x[0]' was declared here
include/linux/mtd/cfi.h:489:3: warning: 'r.x[0]' may be used uninitialized in this function [-Wuninitialized]
(and many more)

The size of vmlinux increases by 1.78% because of this:

size obj-arm/vmlinux.nobug
   text    data     bss     dec     hex filename
   2108474  116916   55352 2280742  22cd26 obj-arm/vmlinux
size obj-arm/vmlinux.bug
   text    data     bss     dec     hex filename
   2150804  116916   53696 2321416  236c08 obj-arm/vmlinux

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Ben Dooks <ben-linux@fluff.org>
2012-08-10 13:02:06 +02:00
Arnd Bergmann
b64456a4fc Merge branch 'testing/new-warnings' into fixes
These patches all fix bugs that were newly introduced in v3.6-rc1
and found because they cause a gcc warning with one of the ARM
defconfigs. Most of them are harmless, but since we're trying
to get rid of all warnings eventually, we can start with the ones
that were not there before.

* testing/new-warnings:
  omap-rng: fix use of SIMPLE_DEV_PM_OPS
  spi/s3c64xx: improve error handling
  mtd/omap2: fix dmaengine_slave_config error handling
  gpio: em: do not discard em_gio_irq_domain_cleanup
  ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
  usb/ohci-omap: remove unused variable
  mfd/asic3: fix asic3_mfd_probe return value

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-08-10 12:28:57 +02:00
Arnd Bergmann
8ab08c0c4c ARM: exynos: exynos_pm_add_dev_to_genpd may be unused
exynos_pm_add_dev_to_genpd is used if one or more out of a large
number of Kconfig symbols are enabled. However the new
exynos_defconfig selects none of those, so the function becomes
unused. Marking it so lets the compiler automatically discard
it.

Without this patch, building exynos_defconfig results in:

arch/arm/mach-exynos/pm_domains.c:118:123: warning: 'exynos_pm_add_dev_to_genpd' defined but not used [-Wunused-function]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Abraham <thomas.abraham@linaro.org>
Acked-by: Kukjin Kim <kgene.kim@samsung.com>
Cc: Rafael J. Wysocki <rjw@sisk.pl>
2012-08-10 12:27:34 +02:00
Arnd Bergmann
a33493775d ARM: imx: gpmi-nand depends on mxs-dma
It is not currently possible to build the gpmi-nand driver without
also building the mxs-dma driver. Clarify this Kconfig and enable
both in the defconfig file so we can build it again with both enabled.

drivers/built-in.o: In function `gpmi_dma_filter':
clk-fixed-factor.c:(.text+0xafc18): undefined reference to `mxs_dma_is_apbh'
make[1]: *** [vmlinux] Error 1
make: *** [sub-make] Error 2

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Sascha Hauer <kernel@pengutronix.de>
2012-08-09 15:16:44 +02:00
Arnd Bergmann
b434f5c95d ARM: integrator: include <linux/export.h>
Without this patch, building integrator_defconfig results in:

arch/arm/mach-integrator/core.c:150:1: warning: data definition has no type or storage class [enabled by default]
arch/arm/mach-integrator/core.c:150:1: warning: type defaults to 'int' in declaration of 'EXPORT_SYMBOL' [-Wimplicit-int]
arch/arm/mach-integrator/core.c:150:1: warning: parameter names (without types) in function declaration [enabled by default]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Russell King <linux@arm.linux.org.uk>
2012-08-09 15:16:44 +02:00
Arnd Bergmann
35e7906145 ARM: s3c24xx: use new PWM driver
The samsung PWM driver has moved to the new PWM subsystem, which
changed the Kconfig symbol for that driver, but the rx1950 and
gta02 boards still uses the old one.

Without this patch, building s3c2410_defconfig results in:

arch/arm/mach-s3c24xx/built-in.o: In function `rx1950_lcd_power':
arch/arm/mach-s3c24xx/mach-rx1950.c:430: undefined reference to `pwm_config'
arch/arm/mach-s3c24xx/mach-rx1950.c:431: undefined reference to `pwm_disable'
arch/arm/mach-s3c24xx/mach-rx1950.c:437: undefined reference to `pwm_config'
arch/arm/mach-s3c24xx/mach-rx1950.c:438: undefined reference to `pwm_enable'
arch/arm/mach-s3c24xx/built-in.o: In function `rx1950_backlight_exit':
arch/arm/mach-s3c24xx/mach-rx1950.c:504: undefined reference to `pwm_free'
arch/arm/mach-s3c24xx/built-in.o: In function `rx1950_backlight_init':
arch/arm/mach-s3c24xx/mach-rx1950.c:487: undefined reference to `pwm_request'

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reported-by: Tushar Behera <tushar.behera@linaro.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
2012-08-09 15:16:43 +02:00
Arnd Bergmann
9c97738c5d ARM: sa1100: include linux/io.h in hackkit leds code
The sa1100 definition of the io_p2v macro has changed in v3.6, and this one
file stopped working because of that.

Without this patch, building hackkit_defconfig results in:

arch/arm/mach-sa1100/leds-hackkit.c: In function 'hackkit_leds_event':
arch/arm/mach-sa1100/leds-hackkit.c:39:4: error: implicit declaration of function 'IOMEM' [-Werror=implicit-function-declaration]

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@arm.linux.org.uk>
2012-08-09 15:16:42 +02:00
Arnd Bergmann
4eef6cbfcc Input: eeti_ts: pass gpio value instead of IRQ
The EETI touchscreen asserts its IRQ line as soon as it has data in its
internal buffers. The line is automatically deasserted once all data has
been read via I2C. Hence, the driver has to monitor the GPIO line and
cannot simply rely on the interrupt handler reception.

In the current implementation of the driver, irq_to_gpio() is used to
determine the GPIO number from the i2c_client's IRQ value.

As irq_to_gpio() is not available on all platforms, this patch changes
this and makes the driver ignore the passed in IRQ. Instead, a GPIO is
added to the platform_data struct and gpio_to_irq is used to derive the
IRQ from that GPIO. If this fails, bail out. The driver is only able to
work in environments where the touchscreen GPIO can be mapped to an
IRQ.

Without this patch, building raumfeld_defconfig results in:

drivers/input/touchscreen/eeti_ts.c: In function 'eeti_ts_irq_active':
drivers/input/touchscreen/eeti_ts.c:65:2: error: implicit declaration of function 'irq_to_gpio' [-Werror=implicit-function-declaration]

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: stable@vger.kernel.org (v3.2+)
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Sven Neumann <s.neumann@raumfeld.com>
Cc: linux-input@vger.kernel.org
Cc: Haojian Zhuang <haojian.zhuang@gmail.com>
2012-08-09 15:16:41 +02:00
Stephen Warren
798bd59ce9 ARM: tegra: more regulator fixes for Harmony
Commit 3d55c29 "ARM: tegra: harmony: add regulator supply name and its
input supply" was supposed to fix all the problems with regulators on
Harmony. However, it appears that I only tested it when booting using
board files, not when booting using device tree. This change fixes two
problems with regulators when booting using device tree:

1) That patch only created the vdd_sys regulator when booting using a
   board file. Since this is the root of the whole regulator tree, this
   caused no regulators to successfully initialize when booting using
   device tree. The registration of vdd_sys is moved to fix this.

2) When booting use DT, the regulator core sets has_full_constraints,
   which in turn causes the core to turn off any regulators not marked
   as always on. Some of the affected regulators are required for basic
   system operation. To solve this, add always on constraints to all
   relevant regulators. This doesn't affect booting using a board file
   since nothing sets has_full_constraints in that case.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2012-08-09 15:16:40 +02:00
Aaro Koskinen
d9e0d149b5 ARM: dma-mapping: fix incorrect freeing of atomic allocations
Commit e9da6e9905 (ARM: dma-mapping:
remove custom consistent dma region) changed the way atomic allocations
are handled. However, arm_dma_free() was not modified accordingly, and
as a result freeing of atomic allocations does not work correctly when
CMA is disabled. Memory is leaked and following WARNINGs are seen:

[   57.698911] ------------[ cut here ]------------
[   57.753518] WARNING: at arch/arm/mm/dma-mapping.c:263 arm_dma_free+0x88/0xe4()
[   57.811473] trying to free invalid coherent area: e0848000
[   57.867398] Modules linked in: sata_mv(-)
[   57.921373] [<c000d270>] (unwind_backtrace+0x0/0xf0) from [<c0015430>] (warn_slowpath_common+0x50/0x68)
[   58.033924] [<c0015430>] (warn_slowpath_common+0x50/0x68) from [<c00154dc>] (warn_slowpath_fmt+0x30/0x40)
[   58.152024] [<c00154dc>] (warn_slowpath_fmt+0x30/0x40) from [<c000dc18>] (arm_dma_free+0x88/0xe4)
[   58.219592] [<c000dc18>] (arm_dma_free+0x88/0xe4) from [<c008fa30>] (dma_pool_destroy+0x100/0x148)
[   58.345526] [<c008fa30>] (dma_pool_destroy+0x100/0x148) from [<c019a64c>] (release_nodes+0x144/0x218)
[   58.475782] [<c019a64c>] (release_nodes+0x144/0x218) from [<c0197e10>] (__device_release_driver+0x60/0xb8)
[   58.614260] [<c0197e10>] (__device_release_driver+0x60/0xb8) from [<c0198608>] (driver_detach+0xd8/0xec)
[   58.756527] [<c0198608>] (driver_detach+0xd8/0xec) from [<c0197c54>] (bus_remove_driver+0x7c/0xc4)
[   58.901648] [<c0197c54>] (bus_remove_driver+0x7c/0xc4) from [<c004bfac>] (sys_delete_module+0x19c/0x220)
[   59.051447] [<c004bfac>] (sys_delete_module+0x19c/0x220) from [<c0009140>] (ret_fast_syscall+0x0/0x2c)
[   59.207996] ---[ end trace 0745420412c0325a ]---
[   59.287110] ------------[ cut here ]------------
[   59.366324] WARNING: at arch/arm/mm/dma-mapping.c:263 arm_dma_free+0x88/0xe4()
[   59.450511] trying to free invalid coherent area: e0847000
[   59.534357] Modules linked in: sata_mv(-)
[   59.616785] [<c000d270>] (unwind_backtrace+0x0/0xf0) from [<c0015430>] (warn_slowpath_common+0x50/0x68)
[   59.790030] [<c0015430>] (warn_slowpath_common+0x50/0x68) from [<c00154dc>] (warn_slowpath_fmt+0x30/0x40)
[   59.972322] [<c00154dc>] (warn_slowpath_fmt+0x30/0x40) from [<c000dc18>] (arm_dma_free+0x88/0xe4)
[   60.070701] [<c000dc18>] (arm_dma_free+0x88/0xe4) from [<c008fa30>] (dma_pool_destroy+0x100/0x148)
[   60.256817] [<c008fa30>] (dma_pool_destroy+0x100/0x148) from [<c019a64c>] (release_nodes+0x144/0x218)
[   60.445201] [<c019a64c>] (release_nodes+0x144/0x218) from [<c0197e10>] (__device_release_driver+0x60/0xb8)
[   60.634148] [<c0197e10>] (__device_release_driver+0x60/0xb8) from [<c0198608>] (driver_detach+0xd8/0xec)
[   60.823623] [<c0198608>] (driver_detach+0xd8/0xec) from [<c0197c54>] (bus_remove_driver+0x7c/0xc4)
[   61.013268] [<c0197c54>] (bus_remove_driver+0x7c/0xc4) from [<c004bfac>] (sys_delete_module+0x19c/0x220)
[   61.203472] [<c004bfac>] (sys_delete_module+0x19c/0x220) from [<c0009140>] (ret_fast_syscall+0x0/0x2c)
[   61.393390] ---[ end trace 0745420412c0325b ]---

The patch fixes this.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2012-08-09 07:46:07 +02:00
Aaro Koskinen
e4ea6918c9 ARM: dma-mapping: fix atomic allocation alignment
The alignment mask is calculated incorrectly. Fixing the calculation
makes strange hangs/lockups disappear during the boot with Amstrad E3
and 3.6-rc1 kernel.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2012-08-09 07:46:07 +02:00